Jittering plane in the rhythm of the sound, using OpenGL.

	There are also some keyboard keys you can press to modify options:
	'f': toggle fullscreen mode
	't': toggle between flat and smooth shading.
	'g': toggle the drawing of the ground.
	'p': pause and unpause display
	',' and '.': adjust the tessellation.
	'i' and 'k': adjust the camera height.
	'o' and 'l': adjust the camera velocity.

	It also accepts the following xmms shortcuts (sent to session 0):
	'z': previous		'x': pause
	'c': play		'v': stop
	'b': next		's': shuffle
        'r': repeat